Lamp-socket.



its 738,717.

Patented September 8, 1903. w

UNITED STATES PATENT FFICE.

LEONARD ERIKSON, orv MALDEN, MASSACHUSETTS.

LAM P- SOCKET.

SPEGIFIGATION forming part of Letters lldtent N 0. 738,717, dated September 8, 1903.

. Original application filed July 2, 1902,8cria1 No. 114.104. Divided and this application filed December 12, 1902. Serial lic-134,932. (NomodeL) To all whom it may concern:

Be it known that LLEONARD ERIKsoN,a citizen of the United States, residing at Malden,

in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvementsin Lamp-Sockets; and I do hereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to sockets of insulating material for holding incandescent lamps in position; and it consists in the novel construction and combination of the parts, hereinafter fully described and claimed.

In the drawings, Figure 1 is a front view of the lamps and their socket. Fig. 2 is a rear other terminals by screws iandj.

View of the socket,drawn to a larger scale. Fig.

l 3 is a cross-section taken on line a; a; in Fig. 2.

Fig. 4 is a longitudinal section through the socket. Fig. 5 is an end vew of the socket.

A is a trough -shaped reflector of sheet metal and B is a lamp-socket of insulating material secured in the trough of the reflector in any approved manner. The socket B has a cylindrical chamber 79 at each end, in which is secured a screw-threaded tube 1), of thin sheet metal. An incandescent lamp 0, of any approved make, is screwed into the tube b at each end of the socket.

The socket B has two recesses'd and e at.

its middle part, and d and e are two metallic bridge-pieces arranged in these recesses, respectively. The bridge-piece d is arranged on the axis of the lamps and the tube b and is connected to the central terminals of the lamps by screwsfand g, which engage with the end portions of the bridge-piece d. The bridge-piece e is arranged to one side of the axis of the lamps and is connected to their The heads of these screws bear on flanged end portions of the tubes Z and hold them'in position, and their point ends engage with the end portions of the bridge-piece e. Thin plates of insulatin g material 7c,such as mica, are placed over theheads of the screws '1: andj and are held in position by the central screws f and g.

The line-wires 'm and m are connected to the bridge-pieces'rl and e by binding-screws.

The two recesses d and e have a shallow recess 71, formed in the socket B around them,

and n is a curved plate of insulating material arranged in the recess 01. between the bridge-pieces and the metallic reflector.

I do not herein broadly claim the combination of the socket withthe reflector and the.

means for connecting these parts together, as the same is claimed in a separate application filed July 2, 1902, Serial No. 114,104, from which the subject-matter ofthis application has been divided.

What I claim isl. The combination, with a trough-shaped reflector, of a socket of insulating material secured in the said reflector and provided with two recesses at its middle part and a shallow. recess surrounding them, lamps carline-wires to connect with arranged in the said recesses, a screw which holds the said tube in position and engages with one of the said bridge-pieces, and a contact-screw arranged on the axis of the said tube and engaging with the other said bridge-piece, substantially as set forth.

3. The combination, with a socket. of insulating material having a chamber for engag ing with a lamp at each end and two recesses atrits middle part, of metallic bridge-pieces for the line-wires to connect with arranged in the said recesses and arranged out of line with each other, and contact-screws inserted through the said chambers and engaging with the saidbridge-pieces, substantially as set forth.

4. The combination, with a socket. of insulating material having a chamber atone end, of a metallic tube for engaging with the lamp arranged in the said chamber, metallic brid ge- I pieces for the line-wires to connect with arengaging with the othersaidbridge-piece,subranged out of line with each other, a screw stantially as set forth. i

which holds the'said tube in position and en- I In testimony whereof I affix my signatur gages with one of the said bridge-pieces, a in presence of two witnesses.

LEONARD ERIKSON.

5 plate of insulating material arranged in the said tube over the head of the said screw, and a contact-screw passing through the said plate and arranged at the axis of the said tube and l Witnesses:

ALICE J. MURRAY, FRED. K. DAGGETT. 

